* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --text-primary: #37352f;
    --text-secondary: #787774;
    --bg-primary: #ffffff;
    --bg-secondary: #f7f6f3;
    --border: #e3e2df;
    --accent: #2383e2;
    --accent-hover: #1a6ec7;
}

body {
    font-family: ui-sans-serif, -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    background: var(--bg-primary);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 40px;
}

/* Header */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background: rgba(255, 255, 255, 0.9);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text-primary);
}

/* Buttons */
.btn-primary {
    background: var(--text-primary);
    color: white !important;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
    font-weight: 500;
    font-size: 15px;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background: #1f1e1a;
    color: white !important;
    transform: translateY(-1px);
}

.btn-secondary {
    background: transparent;
    color: var(--text-secondary) !important;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
    font-weight: 500;
    font-size: 15px;
    border: none;
    cursor: pointer;
}

.btn-secondary:hover {
    background: var(--bg-secondary);
    color: var(--text-primary) !important;
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    display: inline-block;
    transition: all 0.2s;
    font-weight: 500;
    font-size: 15px;
    cursor: pointer;
}

.btn-outline:hover {
    background: var(--bg-secondary);
}

.btn-large {
    padding: 12px 24px;
    font-size: 16px;
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background: var(--bg-primary);
}

.hero .container {
    text-align: center;
    max-width: 800px;
}

.hero h1 {
    font-size: 56px;
    line-height: 1.2;
    margin-bottom: 24px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 24px;
    color: var(--text-secondary);
    line-height: 1.6;
    font-weight: 400;
}

.platform-badges {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 40px;
}

.platform-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border);
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.cta-note {
    font-size: 14px;
    color: var(--text-secondary);
}

.hero-image {
    margin-top: 60px;
    display: flex;
    justify-content: center;
}

.demo-video {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--border);
    background: var(--bg-secondary);
}

.demo-video-desktop {
    max-width: 900px;
}

.demo-video-mobile {
    display: none;
    max-width: 320px;
}

/* How It Works Section */
.how-it-works {
    padding: 80px 0;
    background: var(--bg-primary);
}

.steps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 48px;
    max-width: 1000px;
    margin: 0 auto;
}

.step-card {
    text-align: center;
    padding: 32px 24px;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--text-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    margin: 0 auto 24px;
}

.step-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.step-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

/* Features Section */
.features {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: 40px;
    margin-bottom: 60px;
    color: var(--text-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 48px;
}

.feature-card {
    text-align: left;
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 16px;
}

.feature-card h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

/* Pricing Section */
.pricing {
    padding: 80px 0;
    background: var(--bg-primary);
}

.pricing-subtitle {
    text-align: center;
    font-size: 18px;
    color: var(--text-secondary);
    margin-bottom: 60px;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background: white;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
    position: relative;
    transition: all 0.2s;
    display: flex;
    flex-direction: column;
}

.pricing-card:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.pricing-card.featured {
    border-color: var(--text-primary);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.pricing-badge {
    display: inline-block;
    padding: 4px 10px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 4px;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 16px;
}

.pricing-badge.popular {
    background: var(--text-primary);
    color: white;
}

.pricing-title {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--text-primary);
    font-weight: 600;
}

.pricing-price {
    margin-bottom: 24px;
}

.price-amount {
    font-size: 42px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.price-period {
    font-size: 16px;
    color: var(--text-secondary);
    font-weight: 400;
}

.pricing-features {
    list-style: none;
    margin-bottom: 24px;
    flex-grow: 1;
}

.pricing-features li {
    padding: 10px 0;
    color: var(--text-secondary);
    font-size: 15px;
}

.btn-pricing {
    width: 100%;
    text-align: center;
}

/* Benefits Section */
.benefits {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    max-width: 1000px;
    margin: 0 auto;
}

.benefit-card {
    background: white;
    padding: 32px 24px;
    border-radius: 8px;
    text-align: center;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
}

.benefit-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.benefit-card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.benefit-card p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    background: var(--bg-primary);
    text-align: center;
}

.cta-section h2 {
    font-size: 36px;
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.cta-section p {
    font-size: 18px;
    margin-bottom: 32px;
    color: var(--text-secondary);
}

/* FAQ Section */
.faq {
    padding: 80px 0;
    background: var(--bg-secondary);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    padding: 32px;
    border-radius: 8px;
    margin-bottom: 16px;
    border: 1px solid var(--border);
    transition: all 0.2s;
}

.faq-item:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
}

.faq-item h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text-primary);
    font-weight: 600;
}

.faq-item p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
}

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: 40px 0;
    text-align: center;
}

.footer-logo {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.footer-text {
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 16px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 13px;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--text-primary);
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 24px;
    }

    .hero {
        padding: 80px 0 60px;
    }

    .hero h1 {
        font-size: 40px;
    }

    .hero-subtitle {
        font-size: 18px;
    }

    .platform-badges {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .demo-video-desktop {
        display: none;
    }

    .demo-video-mobile {
        display: block;
        max-width: 280px;
    }

    .nav-links {
        gap: 20px;
    }

    .section-title {
        font-size: 32px;
    }

    .features-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
    }

    .cta-section h2 {
        font-size: 28px;
    }

    .cta-section p {
        font-size: 16px;
    }

    .steps-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .benefits-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }

    .faq-item {
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 32px;
    }

    .nav-links a:not(.btn-primary):not(.btn-secondary) {
        display: none;
    }
}